@In with primitives

[docjava]

Hi

My Task is to keep a few Parameters of a Conversational Bean as defaults in the Session scope.

My first try is:

@In(required = false, scope = ScopeType.SESSION)
@Out(scope = ScopeType.SESSION)
private int documentListPageSize=0;

which gives me an exception in
sun.reflect.UnsafeIntegerFieldAccessorImpl.set due to trying to set an int to null.

My question is: why does seem try to inject this at all, where the corresponding Object in the Session Scope cannot be found ?

To work around this, i tried to add a @Factory method returning some default. Did´t help at all.

What is the best practice for this usage pattern ?

(I´m using 1.1.7 on JBossAS 4.0.5)

Thanks, Uwe

[shane.bryzak]

Best practice I'd say is to use an Integer.

[docjava]

Best practice I'd say is to use an Integer.

Hi Shane, thanks for your time.

While it obviously is a good idea to switch to Integer where null-references are wanted, the fact that i used an int initially is a good indicator, that null isn´t that useful ;)
I do not see, what is wrong with using primitives here. The problem was that the initialization must be done via Seam like this:

@In(create=true)
@Out(scope = ScopeType.SESSION)
private int documentListPageSize;

@Factory(value = "documentListPageSize", scope = ScopeType.SESSION)
public int createDocumentListPageSize()
{
return UIListHelper.DEFAULT_PAGE_SIZE;
}

The problem was that create=true was missing on @In.

While this works fine now (yep, with *int*s), it looks like doing this programmatically is quite more readable, than the above use of Annotations:

private SeamSessionLocal pageSize = new SeamSessionLocal("documentListPageSize",
UIListHelper.DEFAULT_PAGE_SIZE);

where SeamSessionLocal is a wrapper to an Attribute of the SessionContext.

Well kind of flavour, i guess.

Thanks again Shane.